S63.642ABillable
Sprain of metacarpophalangeal joint of left thumb, initial encounter
Short description: Sprain of metacarpophalangeal joint of left thumb, init
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes
- Category
- S63
- Effective date
- October 1, 2026
Related codes in category S63
S63Dislocation and sprain of joints and ligaments at wrs/hnd lvS63.0Subluxation and dislocation of wrist and hand jointsS63.00Unspecified subluxation and dislocation of wrist and handS63.001Unspecified subluxation of right wrist and handS63.001AUnspecified subluxation of right wrist and hand, init encntrYesS63.001DUnspecified subluxation of right wrist and hand, subs encntrYesS63.001SUnspecified subluxation of right wrist and hand, sequelaYesS63.002Unspecified subluxation of left wrist and handS63.002AUnspecified subluxation of left wrist and hand, init encntrYesS63.002DUnspecified subluxation of left wrist and hand, subs encntrYesS63.002SUnspecified subluxation of left wrist and hand, sequelaYesS63.003Unspecified subluxation of unspecified wrist and hand
Frequently asked questions
What is ICD-10 code S63.642A?
S63.642A is an ICD-10-CM diagnosis code for Sprain of metacarpophalangeal joint of left thumb, initial encounter.
Is S63.642A a billable code?
Yes. S63.642A is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is S63.642A in?
S63.642A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did S63.642A become effective?
S63.642A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to S63.642A?
S63.642A belongs to category S63, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.